Abstract
The front cover picture illustrates the highly reactive NHC-bound heterocyclic o-QDM intermediate derived from 3-furaldehyde, which effectively acts in the (4+2)-cycloaddition reaction leading to 6,7-dihydro-4H-furo[3,2-c]pyran-4-ones. This dearomative strategy utilizes the process of 1,4-elimination and is promoted by the N-heterocyclic carbene catalyst. The lightning symbolizes the concept of the aromaticity breaking as the key step for the functionalization of (hetero)aromatic aldehydes. Details can be found in the Research Article by Skrzyńska, Albrecht and co-workers (A. Przydacz, A. Topolska, A Skrzyńska, Ł. Albrecht Adv. Synth. Catal. 2022, 364, XXXX-YYYY; DOI: 10.1002/adsc.202101338)
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